Water Fast Coaching and Articles

Dr. Tallis Barker, D.Phil., Nat.Dip., NA.Dip., Naturopathic Water Fasting Consultant & Coach

7-10 day water fasts: maximising benefits and overcoming challenges

Expert Water fasting coaching with Dr Tallis Barker? D.Phil, Nat.Dip

Once you’ve gained confidence with 3-day fasts, a 7–10 day water fast offers an entirely different level of healing. This is when your body not only burns fat through ketosis, but begins to detoxify stored toxins, release inflammation, and activate deeper repair mechanisms. It’s not always easy—but it’s often where the most profound shifts take place, physically, emotionally, and spiritually.

In this article, you’ll learn what to expect at each stage of a 7–10 day fast, how to prepare and refeed safely, and how to recognise signs of deeper healing—including what’s known as a healing crisis. If you’re planning your first longer fast, this is your guide.

It allows the body to go beyond ketosis and into deeper detox, cellular repair, and long-term healing.

Not always. Many people find the first 3 days are the hardest, and the rest becomes easier as ketosis stabilises.

Lighten your diet with fruits and vegetables to support digestion and ease the transition into fasting.

It’s a temporary return or intensification of old symptoms as your body clears deep-rooted issues.

Very gently—with juice or light fruit/vegetables. Refeeding should be slow and respectful to your digestion.

CONTENTS:

  • Introduction
    Why 7–10 days unlocks deeper healing than shorter fasts, and how to approach it with confidence.
  • What Happens During a 7–10 Day Fast
    The two typical trajectories of longer fasts: feeling energised or moving through detox symptoms.
  • Dietary Preparation Before the Fast
    How to eat in the days leading up to your fast to protect digestion and ease detox.
  • Refeeding After a 7–10 Day Fast
    What to eat (and what to avoid) when breaking your fast—plus how long recovery might take.
  • The 7–10 Day Fast in Greater Detail
    A day-by-day breakdown of how your body and mind change throughout the process:
    • Days 1–3 – Glycogen depletion and the switch to ketosis
    • Days 4–6 – Maximum ketosis, detox symptoms, and physical renewal
    • Days 7–10 – Healing crises and profound shifts in body and consciousness
  • What Is a Healing Crisis?
    Understanding why symptoms may return and how to recognise true healing versus signs to stop.
  • What About Fasts Longer Than 10 Days?
    When deeper or extended fasting is appropriate—and how to know if it’s right for you.

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Introduction:

Assuming you don’t have any urgent health issues which require an immediate extended fast (typically lasting 14-40 days), then I believe the best way to establish a long-term relationship with water fasting is to develop and nurture that relationship gradually. The most reliable way to do this is to work initially with short fasts which feel relatively manageable, without putting undue pressure on yourself.

After you feel comfortable with 3 day water fasts and, physically, your body can make the switch to ketosis without much fuss, then it’s time to consider a 7-10 day water fast. For it’s only after you begin drawing solely on the energy of fat cells that the process of detoxification can kick into a higher gear (more info here) and you can start to reap the greatest benefits of a water fast. This means that a 3 day fast simply isn’t enough to confront any deeper issues you might want to heal.

If you’ve found it difficult to get through your first few three-day water fasts, it’s only understandable that the thought of a 7-10 day fast seems even more daunting. For this reason, I offer private online consultations and coaching for water fasting.

Dr Barker regularly speaks at international conferences on water fasting. Below you’ll find his lecture for The Real Truth About Health conference, as well as a panel conversation with Dr. Alan Goldhamer – one of the most recognised names in the field.

What happens during a 7-10 day water fast?

Despite some natural doubts and fears, many of my clients find that 7-10 day fasts tend to go more smoothly than they first expect (so long as they’re basically healthy and don’t have any serious issues with detox). This is because your body does some of the hardest work in the first three days while it establishes ketosis – and during which your fuel tanks are also running on empty. From the third day on, though, ketosis continues to become increasingly efficient, and this typically leads to one of two outcomes.

On the one hand, some people begin to feel lighter and fuller with energy. In many ways, the fast can feel like a celebration of freedom from the daily need to eat food. This freedom, as well as a lighter body and clearer consciousness, can feel so good that many people actually experience a sense of reluctance in returning to food at the end of the fast. There really is a beautiful purity about just being, without the needs and addictions of food distracting you, weighing you down.

On the other hand, some people experience a distinct roller coaster ride from this point as detox symptoms ebb and flow. In essence, with your ketosis engine having powered up over the first three days, your body now wants to turn all of that energy towards detox and healing, which can actually lead to lower perceived energy levels. It’s important to remember that you’re not actually lacking in overall energy, but rather that energy wants to flow inwards instead of outwards like it does in everyday life. Don’t get disheartened: as hard as it often is, this means your body is working for you!

The webshop offers downloadable fasting plans and guides to help make your water fast a success.

As your healing metabolism firmly establishes itself by the end of the third day, the digestive system is in the midst of shutting down its normal function. As a result, most hunger pangs usually subside significantly after this point, assuming you’re able to rest and not overextend yourself with too much work. When I’m working with a client, one of the most frequent conversations is the need to try and slow down the pace of everyday life, both in order to maximise healing as well as to minimise any remaining hunger pangs. This doesn’t necessarily mean you need to give up your job and spend the whole day in bed (!), but it does mean that it’s a good idea to try and reduce your commitments during the fast. Remember: your fast should be about you and not trying to pretend it’s ‘just another day’ of your regular routine.

This is all the more important if you’re fasting in order to address a health problem. Your body has a finite amount of energy, and it’s simply not worth wasting too much of that energy on the activities of everyday life. One of the most important issues I discuss with clients is how to best manage daily activities in order to maximise the healing potential of a fast, when it isn’t possible to take time off from work. The reality is that we often don’t live in an ideal world – and the sooner this is recognised, the more effectively it becomes possible to devise alternative strategies.

Dietary preparation before a 7-10 day fast:

Given that digestion comes to a halt after a few days of fasting, it’s extremely important to consider how and what you eat in the transition period both before and after any fast longer than three days. The transition before a fast is important because you don’t want your digestive system to shut down with food still remaining inside the intestines. This is important for two reasons.

First, it can rot inside you. Not a pretty thought. And as it rots, the toxic by-products aren’t going to help your body – precisely when you’re trying to detoxify through the fast itself.

Second, during the most intense periods of detox, your liver is often forced to release semi-processed toxins into the bile, which then leads to a potential toxic build-up in the colon. You don’t want to complicate matters further by having any digestive remnants hanging around as well!

Practically, dietary preparation means gradually lightening up your diet in the days before a 7-10 day fast. This means different things to different people, depending on their specific diet. Exactly how to carry out a dietary preparation is something I discuss with each client on an individual basis. However, one common element involves increasing relative fruit and/or vegetable intake. Where this is contraindicated because of food sensitivities or gut issues such as SIBO, it is extremely important to find an alternative strategy.

There are several benefits of focussing on fruits and vegetables before a 7-10 day fast. First, they require less energy to digest. This allows your body to wind down digestion and switch into its healing metabolism more quickly and effectively. Second, they contain plenty of fibre to help elimination, thereby clearing out digestive remnants before peristalsis (motility) largely ceases during the fast. Third, they are so-called ‘alkaline-forming’ foods. This helps to balance the pH of your body during the fast, especially during the heaviest periods of fasting detox.

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Refeeding after a 7-10 day fast:

The transition out of a 7-10 day fast is at least as important as the preparation beforehand, because your digestive system is hibernating. It can’t digest. You have to wake it up slowly and with respect, eating small portions of easily digestible foods. Otherwise, you’ll be sorry!

Just as any food remaining in the gut at the beginning of a longer fast can rot, so a similar situation can occur now too. Anything other than the simplest fruits and vegetables is likely to sit in your stomach, until your digestive system is able to cope. This can and will take days. After fasting, many of my clients find that the transition time back to normal eating with a normal appetite can last up to a similar length of time as that of the fast itself (although there is also a large degree of variation from person to person, and many people bounce back more quickly).

In essence, a refeeding strategy should look the mirror image of what happens during the dietary preparation before the fast (see above). The exact pacing of refeeding, however, should be dictated by the body itself, rather than by emotional cravings for particular foods or simply a driving desire to eat. Until gaining enough experience in fasting, most people find this exceedingly difficult – and, consequently, managing issues during refeeding is one of the most important elements of my work when coaching most clients.

I remember the exuberance of celebrating the end of my own first 7 day water fast. I had no idea what I was doing! A simple salad quickly become a slice of pizza – which then turned into eating the whole pizza!!! It weighed like an anchor in my stomach for literally days afterwards… Needless to say, I learned my lesson afterwards!

To help people deal with the trials and tribulations of refeeding, I offer an exhaustive pdf on the subject in the webshop:

How to break a water fast?

If you return too quickly to a normal diet, you risk encountering both digestive problems as well as ‘refeeding syndrome’. This is a potentially fatal complication caused by the change from ketosis back to your everyday metabolism. If you have any doubts, I offer a downloadable 86-page PDF which covers refeeding for any length of fast.

The 7-10 day water fast in greater detail:

Days 1-3:

Of course, the first three days of a 7-10 day water fast generally follow the process described in the 3 day water fast. With experience, though, it will become much easier – even enjoyable – and the process to complete the switch to ketosis will accelerate.

Days 4-6:

Days 4-6 is the usual timeframe when your body reaches maximum ketosis. This is clearly supported by my clients who love data, and who choose to measure their daily blood ketone levels. With a remarkable degree of consistency, most of them reach an average maximum ketosis of 5-6 mmol/l, usually around Day 5 (+/- 1 day).

At this point, after having fully ramped up ketosis, your body will want to devote greater resources to detox and healing. You’ll know when this happens! Above and beyond the detox symptoms mentioned above, your breath will stink. Your sweat and general body odour will also stink, as your skin releases toxins which may have been locked up inside you for literally most of your life. No, it’s not a very social occupation! But directly experiencing the repulsive things coming out of your body can make you appreciate how good it is to be free of them! It will give you the willpower to continue fasting in the future, no matter how hard it may have been in the beginning. I myself became a convert to water fasting on Day 4 or 5 of my first 7-day water fast, when my tongue began to produce a foul metallic-tasting froth. It tasted literally like poison.

Beyond the possibility of nausea at any time, detox can also typically cause aches in the muscles, connective tissue and the lymphatic system. However, this is generally more bearable than during the first three days, when you’re lower on energy. You’ll probably find there are periods when physically you actually feel great, with a clear and still consciousness, and then this will pass into a period of deeper cleansing when you feel weaker and heavier. During longer fasts, things always change. From hour to hour. From day to day. There’s no apparent logic to it, so don’t try to analyse. Just trust your body and go with the flow. It knows what it’s doing: how and what to detox, where to heal, and when to take breaks in between these more intensive periods.

Days 7-10:

You might be wondering why I’ve not listed a ‘5 day water fast’ or something similar here on this website. If you’d like to try four or five days, then by all means do! Every day of fasting does you good! But it’s because of the benefits of what often happens around the end of the first week of fasting that, in my opinion, it’s worth aiming for a period of 7-10 days. It’s at this point that you may experience a so-called ‘healing crisis‘. This occurs when your body has moved beyond the simple ‘house-cleaning’ of everyday toxins, and has started to tackle deeper illnesses, injuries and traumas (both physical and emotional). This is also described in the article on extended 14-40 day fasts.

What is a healing crisis?

A healing crisis consists of symptoms of an (old) illness returning or temporarily intensifying during the fast itself. This can be a little worrying, especially if you don’t understand what’s happening to you at the time. Nevertheless, it is perfectly normal. Think of it like this: fasting calls the illness forth from where it is otherwise locked physically into the depths of your body and/or emotionally into your subconscious. In calling it forth, you may temporarily experience the symptoms of the illness more acutely, but it is precisely through shaking it loose that you are then able to permanently expel the illness and truly heal. Western medicine can hardly ever achieve this to the same degree, because toxic (allopathic) drugs and physical procedures tend only to reduce or suppress symptoms. They do not deal with root causes of illness!

Occasionally, healing crises can be extremely intense. When this happens, it’s critically important to be able to tell the difference between a healing crisis and a sign from your body urging you to stop the fast. This is where working with an experienced fasting coach like myself can really help. If it’s a healing crisis, you should ideally try and push through. If it’s not, you should stop immediately!

What about water fasts longer than 7-10 days?

Given the degree of detox and depth of healing which occurs during a 7-10 day water fast, there’s usually no need to contemplate longer fasts unless you’d like to address a serious health issue or unless you feel the need to go deeper into your being spiritually. A weekly 24- or 36-hour fast (or perhaps regular intermittent fasting instead) combined with an occasional 7-10 day fast should be all that’s necessary in order to preserve good health. Exactly how frequently you conduct a 7-10 day fast is up to you, but please don’t violate your body by fasting before it’s ready – even if your rational mind believes it’s for a good cause.

Once you’ve faced and overcome the basic physical and emotional challenges on shorter 1-3 day water fasts, you can begin to trust your body and what it wants. At this point, your body always knows best. When the time is right, you’ll feel an inner urge welling up inside yourself to do a 7-10 day fast. You’ll look forward to it. For some people this may be only once every few years, for others up to a couple of times per year. Just follow your inner calling, and let the fast come to you – rather than the other way around!

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297 responses to “7-10 day water fasts: maximising benefits and overcoming challenges”

  1. Hello Tallis,
    Any tips or suggestions on how to prepare my body for 7 days fasting and how far before i start?

    1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Dr. Tallis Barker, D.Phil., Nat.Dip.

      Hi Joanne,
      Thanks for writing. The main thing is to lighten up your diet and make it more alkaline-forming in the days before your fast. Exactly how to do this can vary widely, and it’s something I discuss with every client individually in our pre-fasting consultation. For instance, you could drastically cut back on heavier foods in order to make the cleansing effect of your fast more powerful, but if doing so leaves you feeling deprived even before your fast begins, is that really the best headspace to be in? Important factors in how you devise a preparatory diet should include where your dietary starting point is, your prior experience with fasting, and the degree of emotional cravings for food in everyday life.
      Hope this helps,
      Tallis

  2. Hello! I completed an 8 day water fast yesterday, and today I woke up with a rash similar to hives on my arms and legs. Do you have any idea what this could be? I personally don’t think it was from the food I ate last night to break my fast. I appreciate your help!

    1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Dr. Tallis Barker, D.Phil., Nat.Dip.

      Hi Kellie,
      Thanks for sharing. Skin issues such as itches and rashes are very common during and immediately after fasting. They typically develop when the liver is running to full capacity with neutralising toxins, which means that the skin has to pick up the slack. Whether or not this is the case for you would require a more in-depth look at what was going on both during your fast in terms of symptoms as well as your general state of health beforehand.
      When skin issues do develop they can have a nasty tendency to linger, so it’s important to make sure your post-fasting diet doesn’t contribute to the problem.
      Hope this helps,
      Tallis

  3. You specify 7-10 day Fast. Could 6-10day Fast work as well. I am doing a 6 day Fast. Is there much benefit in doing a 7 day fast vs 6 day. I have NSCLC, Stage 1A, surgerical resction, NED, active surveillance.

    Like Jason, while Fasting my BG goes down to 40-50, sometimes in upper 30’s. I feel fine. Can not find anyone who knows about this or can explain it and whether this is dangerous. Have been doing 20 gram carb Keto for 4-mons. My Ketos go to 7.5-8.5 while Fasting. Is that dangerous?

    1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Dr. Tallis Barker, D.Phil., Nat.Dip.

      Hi Melissa,
      Thanks for sharing. A 6-day fast will give some important preliminary detox and healing, but in order to address cancer I’d always recommend going much, much longer – well beyond the range of a 7-10 day fast. Cancer has the ability to hide from your immune system, and under normal circumstances it can thrive ‘under the radar’ until it kills you. Fasting can eventually root it out and destroy it, but it does take time to reach the point that the up-regulated immune system of an extended fast can identify and ‘tag’ any cancer cells for destruction.
      Hope this helps,
      Tallis

      1. Stephen Evensen Avatar
        Stephen Evensen

        Dear Tallis,

        This is a very interesting point. Can you please direct me to literature that discusses on the anti-cancer effects of fasting? I’m aware of Thomas Seyfried. Perhaps there are others publishing in mainstream journals?

        Thanks,
        Stephen

        1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
          Dr. Tallis Barker, D.Phil., Nat.Dip.

          Hi Stephen,
          I’m afraid there isn’t much, if anything, in the way of mainstream journals which looks into the anti-cancer effects of extended fasting. There simply isn’t much financial incentive for anyone to fund research, and there’s also a lot of vested interest in maintaining the status quo in terms of the current therapies. My recommendations here are based on direct clinical experience working with numerous clients suffering from cancer.
          All the best,
          Tallis

  4. Thank you so much for this website, I’ve found it very helpful and encouraging. I generally live a low-carb lifestyle with pretty consistent intermittent fasting and have done several 3 day fasts without issue. I’m currently on day 4 of a 7 day fast and my blood sugar is very low – fluctuating between 40-50. Most mainstream medical resources suggest that this is incredibly dangerous and that I should perhaps be in a coma. However, I feel ok – very slight headache, minor anxiety, but generally pretty good. I’ve listened a lot to Dr. Pradip Jamnadas, and found him to be very interesting and helpful as well – in one of his talks he mentioned patients having blood sugar as low as 30 and being perfectly fine, which is one reason I haven’t panicked. But that was just one comment in one video and I’m looking for a little more confidence here. And so anyway, I’m curious if there is any data on actual blood sugar levels during extended fasts or if you have any thoughts on this. Thanks!

    1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Dr. Tallis Barker, D.Phil., Nat.Dip.

      Hi Jason,
      Thanks for writing, and I’m glad you’re finding the website useful. With regard to low blood sugar levels, I agree with Dr Pradip Jamnadas that many people can tolerate much lower levels than what is normally considered normal or even safe. I too have had clients whose blood glucose has sunk into the 30s without any negative repercussions. However, it’s also true that I’ve had other clients who encounter significant difficulties in the 50s. So the moral of the story is that we’re all different, and it’s extremely over-simplistic if not downright dangerous to assume that any particular blood sugar levels are ‘good’ or ‘bad’ in their own right. As in so many areas of water fasting, this is hugely important to respect, and especially when inexperienced people understandably go online to try and find ‘the answer’. Nine times out of ten, it is the CONTEXT and not the actual values of any test which provide the greatest meaning.
      Hope this helps,
      Tallis

  5. I have a group of people and my wife, and we do a 7-day water fast. We’ve been doing this for the past three years. We range in age from 40-53 years. We ONLY drink spring water and no supplements (salt, potassium, magnesium, zero-calorie drinks, coffee, lemon, etc.). What is your feeling about taking supplements while fasting? Thank you

    1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Dr. Tallis Barker, D.Phil., Nat.Dip.

      Hi Leroy,
      Thanks for writing. Congratulations on your fasting practice – it’s brilliant to be able to fast together like this! About supplements: I’d refer you to my article on the website here:
      https://waterfasting.org/pills-powders-and-potions-the-reality-of-taking-supplements-while-fasting/

      All the best,
      Tallis

  6. Hey there,I am currently taking an antipsychotic and I think I need to get off the med to truly water fast. But I have really bad insomnia when I don’t take the med. i barely sleep at all. Can I still detox from heavy metals when water fasting if I don’t sleep at all? Or is sufficient sleep an important part of water fasting?

    1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Dr. Tallis Barker, D.Phil., Nat.Dip.

      Hi Lasan,
      Thanks for sharing. In my experience, water fasting is one of the most powerful modalities available to heal from heavy metals. Although often sleep requirements do often drop during a fast, you’re not going to want or be able to fast if you don’t sleep at all. Some of the most difficult clients I work with involve just this: cases of severe insomnia, the involvement of sleep meds and how to manage the whole situation. I wouldn’t recommend trying to juggle all the variables here without some kind of expert coaching through your fast – it’s very much like walking a tightrope!
      Hope this helps,
      Tallis

      1. Thanks so much for your response,but do you think I could still completely detox heavy metals while water fasting? Also,does taking an antipsychotic impact the detox of heavy metals?

        1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
          Dr. Tallis Barker, D.Phil., Nat.Dip.

          Hi Lasan,
          Yes, it is definitely possible to completely detox from heavy metals, and fasting is probably the most powerful way to do so. I can’t comment on whether taking an antipsychotic will negatively impact on this. It will depend on the specific medication.
          Hope this helps,
          Tallis

  7. Great article, thanks Tallis.

    I’ve done a 9 day fast on a retreat in Thailand, some 20 years ago and the experience stayed with me ever since. I loved it. I’ve since eaten healthily and done occasional 1 day fasts. for the last 18 months I’ve fasted daily in leaving 16 hours (between 8pm and 12 noon), more because I found I rushed through breakfast in the am rather than enjoy it – and I very quickly felt the benefit.

    Now, as a fit, strong and pretty healthy 53 year old – I’m going to work to a 7-10 day fast to ‘reset/refresh/recharge’ my system in March/Spring (UK). I’m going to take myself (and my Labrador!) to camp comfortably in a forest. I’ll follow your great guidance pre and post the fast, and may sign up for a consultation with you nearer the time. I had one question in the planning: do you recommend a colonic irrigation session during a 7-10 day fast to rid myself of toxins and waste? If so when, and should I have more than one?

    Many thanks,
    Ross

    1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Dr. Tallis Barker, D.Phil., Nat.Dip.

      Hi Ross,
      Thanks for writing. Sounds like you’ll be headed to a beautiful and perfectly serene environment for your fast this spring. To answer your question: everything you do on a fast has pros and cons, but I’d be very careful with regard to colonics. The body becomes much more sensitive to everything you do when fasting. If you don’t already have plenty of experience with them, it may make sense to do an enema instead, if symptoms arise suggesting that you’d benefit from one (which happens in about 50% of cases on fasts of this length). Very happy to meet you for a consultation when the time is right.
      All the best,
      Tallis

      1. Perfect. Thanks, Tallis. I’ll be in touch. And, on the enema – when should that be done? before, during, after a 7 day fast?

        Very best,
        Ross

  8. Hi, would you recommend a 10-14 day water fast if I am very skinny? I am looking to do a fast for health benefits as I have stomach/esophagus issues, but I do not want to loose too much weight as I always struggled to gain weight. Thanks.

    1. Dr. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Dr. Tallis Barker, D.Phil., Nat.Dip.

      Hi VV,
      Thanks for writing. I’m afraid there’s no way I can recommend a specific length of fast in absolute terms based on the relative description of ‘very skinny’. One thing is for sure, when I’m working with a very skinny client, it’s extremely important to get the length right: maximising the length for optimum healing while not overstepping the limit, which could prove dangerous. It’s like walking a tightrope, and I’d recommend getting professional advice from an expert such as myself before attempting this yourself!
      All the best,
      Tallis

  9. This was a great article! I’ve spent all day trying to find a voice like this one! Thank you!!

    1. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Tallis Barker, D.Phil., Nat.Dip.

      Hi Redwing,
      You’re welcome – and glad you’re finding the website helpful. I hope you’ll find that the other articles have a similar voice :-).
      Tallis

  10. Hi Tallis,
    Would you recommend this length of fasting (7-10 days, or longer) for someone who is underweight?
    My BMI is 18.4 and based on my own rough estimation, my body fat is 5-7%. 35 year old male. I have been 5’5/110lbs since I was 15-16 years old.
    I have sever digestive issues (IBS-M, acid reflux, and bile acid malabsorption) that I would like to heal as I have read anecdotal evidence of many people who finally became symptom free after an extended water fast. I don’t have any other health issues (that I am aware of).
    If extended fasts are not recommended, would 3-5 days be okay?

    1. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Tallis Barker, D.Phil., Nat.Dip.

      Hi Eddie,
      Thanks for sharing. I’m afraid I can’t recommend any specific pre-planned length of fasting for you. More important than this for someone with a very low BMI is to determine the length of the fast based on your evolving weight while actually fasting. One thing is for sure: you’ll need to work with short fasts until the fasting heals your digestion to the extent that you start to put on more weight, which will enable you to contemplate longer fasts. The exact parameters of this plan, however, are something which I could only discuss with you one on one, depending on all the other details in your health history.
      Hope this helps,
      Tallis

      1. Thank you for your reply Tallis!
        I will experiment with shorter fasts (starting with 36h, going to a max of 72h) for one month (or longer), on a weekly basis. Hopefully I will see some improvement that would encourage me to then do at least a 7 day fast, for which I will reach out to you for 1:1 coaching/guidance.

        1. Tallis Barker, D.Phil., Nat.Dip. Avatar
          Tallis Barker, D.Phil., Nat.Dip.

          HI again Eddie,
          You’re welcome! That basically sounds like a good plan – but I’d also include one important caveat. It’s important that in approaching 72-hour fasts you don’t follow up with any subsequent fasts until you’ve at least regained your starting weight. Hopefully this happens within a few days, but you have to listen to your body here and take additional time if necessary.
          All the best,
          Tallis

          1. Hi Tallis,
            That’s great advice. I will be monitoring my weight.
            Thank you once again.

  11. You mention prepping for a fast longer than 3 days to avoid food rotting in your intestines. Where can this info be found? Which ebook that you have available, if any, or somewhere on this site? I looked around and didn’t find anything further about this. Thanks.

    1. Tallis Barker, D.Phil., Nat.Dip. Avatar
      Tallis Barker, D.Phil., Nat.Dip.

      Hi Steve,
      Thanks for writing. I’m not quite sure which info you meant: is it about how to do a dietary prep in order to avoid negative digestive repercussions during the fast? I don’t have any material specific to this issue, but in principle it’s largely the opposite sequence of what happens at the end of a fast, going into refeeding. My pdf on refeeding includes tables/plans for all lengths of fasts, and you can use this as a guide (in reverse) for before a fast. Here is a link to the shop: https://waterfasting.org/product/how-to-break-any-water-fast-and-manage-refeeding-67-page-pdf/
      All the best,
      Tallis

  12. Hi Tallis!

    Thank you for sharing all this wonderful information. I have done several 3 to 5 days fasts this summer, and I just completed a 10-day fast. Towards the end I developed acne around the bottom of my mouth, perioral dermititis. I usually have perfect skin and don’t have any acne. These ones are like a cluster and very deep under the skin, they look bumpy and red. I also had them when I did a 20 day fast a few years ago. I have done refeeding and hoping that when I turn to normal eating they will be gone. Do you have any idea why that might be happenning? I’d love to hear your insight.

    Thank you!

    Anabel

    1. Tallis Barker, D.Phil. Avatar
      Tallis Barker, D.Phil.

      Hi Anabel,
      Glad you’ve found the website useful! To answer your question: skin issues often do erupt while fasting. The exact cause is hard to say without having worked together through your fast, but most likely it developed following a period of more intense detox, in which your liver as the primary organ of detox was unable to fully manage the breakdown of toxins in real time. In most cases, this kind of issue should resolve in time, but it’s also true that sometimes rashes and ‘angry’ skin will linger after a fast if not managed properly. Based on your previous experience, though, it sounds like yours will probably resolve by itself.
      All the best,
      Tallis

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